Fabrication and luminescence properties of In2O3-capped ZnS nanowires

Park, Sunghoon; Jin, Changhyun; Kim, Hyoun Woo; Lee, Chongmu

doi:10.1016/j.jallcom.2011.03.043

Cited by 12 publications

(4 citation statements)

References 36 publications

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“…Si 3 N 4 , SiO 2 , ZrO 2 etc) and high carrier concentration 14 which make them good conductor 15 and apart it has a wide range of other properties such as high optical transparency, 16 chemical stability at elevated temperatures, magnetic properties and excellent luminescence. 17 Due to high electrical conductivity indium oxide is used in electrode material 18,19 (such as in lithium ion battery) and is an important and well known transparent conducting oxide (TCO). Transparent conducting oxides such as indium oxide, tin doped indium oxide and indium zinc oxide (In 2 O 3 -ZnO) films are well known and widely used in microelectronic applications such as liquid crystal displays, solar cells 20 etc.…”

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Studies on Electrodeposition, Microstructure and Physical Properties of Ni-Fe/In₂O₃Nanocomposite

Chaudhari

Singh

2015

J. Electrochem. Soc.

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In 2 O 3 nanoparticles (<100 nm) up to 5 wt% are incorporated into Ni-Fe alloy matrix by electrodeposition which enhance both corrosion resistance and hardness. Plating parameters like current density, concentration of metal ions and In 2 O 3 particles, agitation and the temperature of the bath were optimized to achieve acceptable quality of the coatings. Effect of current density on the development of Ni-Fe/In 2 O 3 nanocomposites and their physical properties was mainly studied. Coatings thus obtained were characterized by SEM-EDAX, XRD, TEM and AFM and surface morphology, crystal structure, microhardness, corrosion resistance, magnetic behavior and electrical resistivity of the nanocomposites were studied. The incorporation of conducting In 2 O 3 particles in a alloy matrix resulted in a higher electrical conductivity than the matrix. X-ray diffraction results showed that the incorporation of In 2 O 3 particles does not affect the Ni-Fe alloy fcc structure but alters the texture of the deposits favoring (111) crystallographic orientation and is independent of the applied current density for deposition. The crystallite size of the nanocomposites is found in the range of 5-13 nm with almost negligible strain.Metal matrix nanocomposite films have drawn great interest due to their unique properties e.g. mechanical, electrical, magnetic and corrosion resistant properties compared with those of conventional materials. 1-4 Out of several techniques for fabrication of alloys and composites, electrodeposition method has been widely used during the past several decades due to its more technologically feasible and economically superior nature and it is emerging as method of choice for the deposition of nanocomposite films in past few years. 2,3,5,6 The electrodeposition of metals is greener route of thin film growing and may also be of interest for fundamental studies of their nanometric nature. The reinforced particles can significantly improve the properties of the coatings depending on the nature, size, concentration and distribution of particles. 5,7 Electroplating parameters like current density, concentration of electrolyte and ceramic particle, temperature, stirring rate and duration of electrolysis also influence the properties of nanocomposites. 8,9 Superior mechanical properties of nickel-iron alloy have been reported by many investigators 10,11 which are strongly dependent on the iron content of the deposits. Permalloy (80 wt% Ni, 20 wt% Fe) has promising properties for practical applications e.g. their interesting magnetic and mechanical properties. Nanocrystalline Ni-Fe magnetic thin films gradually replaced the traditional micro-crystalline magnetic material due to their significant soft magnetic properties. In the past 4,5,12,13 some effort has been made to study the nanocrystalline nickel-iron alloy matrix composites with various type of ceramic particles owing to their excellent physical properties, however corrosion behavior, magnetic and electrical properties of such coatings have not been studied in d...

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Studies on Electrodeposition, Microstructure and Physical Properties of Ni-Fe/In₂O₃Nanocomposite

Chaudhari

Singh

2015

J. Electrochem. Soc.

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“…Emissions peaks at 354, 376 nm for sample S1, peaks at 390 nm for sample S2 and peaks at 394 nm for sample S3, are band-band PL [54]. Other emissions are due to the different types of defects such as interstitial defects, vacancy defects and dangling bonds [55].…”

Section: Pl Spectroscopymentioning

confidence: 99%

Ethylenediamine-assisted growth of multi-dimensional ZnS nanostructures and study of its charge transfer mechanism on supercapacitor electrode and photocatalytic performance

et al. 2020

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In recent years, much interest has been raised by materials with multi-purpose characteristics as the performance of electrochemical energy devices such as supercapacitors and photocatalytic activities depend strongly on the properties of materials. This study delineates various parameters like morphology, energy band gap, charge transfer resistance, different defect states, diffusion coefficient and functional groups adsorbed on the surface of material to assess the performance of supercapacitor electrodes and photocatalytic degradation efficiency of synthesised multi-dimensional ZnS nanostructures. Ethylenediamine (EN)-mediated multi-dimensional ZnS nanostructures were grown by the solvothermal route. One-dimensional (1D), 2D and 3D morphologies were obtained by varying the ratio of de-ionised water and EN, taken as 1:3, 1:2 and 1:1, respectively. The EN molecules effectively capped most of the surfaces of the ZnS nanoparticles formed, preventing agglomeration of nanoparticles due to the decrement in surface energy. The oriented attachment of these clusters resulted in the formation of 1D, 2D and 3D morphologies. The plausible chemistry in the formation of 1D, 2D and 3D nanostructures has been elaborated. Charge transfer properties of prepared electrodes have been examined using the electrochemical impedance spectroscopy (EIS) technique because better charge transfer causes diminishing electron/hole recombination and hence better photodegradation efficiency. Among the synthesised materials, the 2D nanostructure degraded the eosin Y dye to maximum 90.71% efficiency with rate constant 34 × 10−3 min−1. 2D nanostructures possess better charge transfer and hence better photodegradation efficiency. Various studies using methods of UV-vis, Fourier-transform infrared, Brunauer–Emmett–Teller, x-ray photoelectron spectroscopy and photoluminescence spectra are in good agreement with the obtained photodegradation results. After analysing cyclic voltammetry curves and EIS, a higher diffusion coefficient is obtained for 1D nanostructure material, hence a higher specific capacitance and higher energy density of 159.12 F g−1 and 22.75 KWh kg−1 are found in this case. Only 9% loss of specific capacitance is found after 1000 cycles, showing a relatively high cycling stability in 3D nanostructures. The excellent supercapacitive property can be attributed to the porous structure and high specific surface area. Thus, the synthesised multi-dimensional ZnS nanostructures are proved to be a potential candidate for both photocatalytic and supercapacitor electrode performance.

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“…Indium oxide (In 2 O 3 ), an important n-type semiconductor, has been extensively studied due to its advantageous features, such as significant large energy band gap (3.5-3.75 eV) [1], high electrical conductivity [2], excellent luminescence [3,4], and high optical transparency [5]. Accordingly, it has a wide range of practical applications, including optoelectronic devices [6], solar cells [7], field effect transistors [8], electric-double-layer transistors [9], Fabry-Perot resonators [10], thin-film transistors [11], bio sensors, and gas sensors.…”

Section: Introductionmentioning

confidence: 99%

Enhanced NO2 sensing characteristics of Pd-functionalized networked In2O3 nanowires

Kim

Park

Choi

et al. 2011

Journal of Alloys and Compounds

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Fabrication and luminescence properties of In2O3-capped ZnS nanowires

Cited by 12 publications

References 36 publications

Studies on Electrodeposition, Microstructure and Physical Properties of Ni-Fe/In₂O₃Nanocomposite

Studies on Electrodeposition, Microstructure and Physical Properties of Ni-Fe/In₂O₃Nanocomposite

Ethylenediamine-assisted growth of multi-dimensional ZnS nanostructures and study of its charge transfer mechanism on supercapacitor electrode and photocatalytic performance

Enhanced NO2 sensing characteristics of Pd-functionalized networked In2O3 nanowires

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Fabrication and luminescence properties of In2O3-capped ZnS nanowires

Cited by 12 publications

References 36 publications

Studies on Electrodeposition, Microstructure and Physical Properties of Ni-Fe/In2O3Nanocomposite

Studies on Electrodeposition, Microstructure and Physical Properties of Ni-Fe/In2O3Nanocomposite

Ethylenediamine-assisted growth of multi-dimensional ZnS nanostructures and study of its charge transfer mechanism on supercapacitor electrode and photocatalytic performance

Enhanced NO2 sensing characteristics of Pd-functionalized networked In2O3 nanowires

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Studies on Electrodeposition, Microstructure and Physical Properties of Ni-Fe/In₂O₃Nanocomposite

Studies on Electrodeposition, Microstructure and Physical Properties of Ni-Fe/In₂O₃Nanocomposite